Quantity   Component name
1 × Arduino Pro Micro available at AliExpress for 2,79€
1 × 8x8 WS2812 (NeoPixel) LED Matrix available at AlieExpress for 7,58€
1 × LSM303DLHC Accelerometer + Magnetic Field Sensor available at AliExpress for 4,02€
1 × Mini Speaker available at AliExpress for 0,67€
4 × Pushbuttons (10mm long) available at AliExpress for 0,05€
1 × Battery holder (3x AA) available at Conrad Electronic for 1,69€
3 × Angled Female Pin Header available at AliExpress for 0,29€
1 × 5V 2A Step Up Power Converter available at AliExpress for 1,50€